.header{
    width: 100%;
    height: 68px;
    background-color: #fff;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    box-shadow: 2px 2px 10px 2px rgb(0 0 0 / 50%);
}

*{
    margin: 0;
    padding: 0;
    list-style: none;
}

div{
    display: block;
}

body{
    font-family: "Helvetica Neue",Helvetica,Arial, Helvetica, sans-serif;
    font-size: 14px;
    line-height: 1.42857143;
    color: #333;
    background-color: #fff;
}

.left{
    float: left;
    cursor: pointer;
    margin-top: 15px;
    margin-left: 230px;
}

.right{
    float: right;
    margin-top: 15px ;
    margin-right: 9px;
}

*::before,*::after{
    box-sizing: border-box;
}

.center{
    margin-right: 100px;
    float: right;
    width: 276px;
    height: 35px;
    background: #eef1f5;
    border-radius: 35px;
    margin-top: 15px;
}

@media screen and (max-width:1024px) {
    .slidebar {
        transform: translateX(-100%);
    }
    .main {
        padding-left: 0;
    }
}

.slidebar{
    width: 200px;
    height: 100%;
    background-color: #fff;
    position: fixed;
    top:0;
    left:0;
    box-shadow: 2px 12px 10px 2px rgb(0 0 0 /50%);
    z-index: 101;
    transition: transform 0.4s;
}

.slidebar .menu {
    color: #000;
    font-size: 20px;
    padding-left: 20px;
    padding-top: 20px;
    box-sizing: border-box;
}

.slidebar .menu li {
    padding: 10px 0;
}

.slidebar .menu li span {
    width: 30px;
    height: 30px;
    display: inline-block;
    vertical-align: middle;
    background: url("images/icon1.png") no-repeat;
    margin-right: 10px;
}

.slidebar .top {
    width: 100%;
    height: 60px;
    background: #438AFE;
}

.slidebar .top h2 {
    margin: 0;
    text-align: center;
    font-size: 26px;
    color: #fff;
    padding-top: 20px;
}

.header .center .search{
    border:0; 
    background:#EEF1F5; 
    outline: none; 
    width: 268px; 
    height: 30px; 
    border-radius: 30px; 
    padding-left: 10px; 
    box-sizing: border-box;
    margin-top: 3px;
    margin-left: 9px;
}